(19)

(11)

EP 4 097 113 A1

(12)

(43) Date of publication: 07.12.2022 Bulletin 2022/49 (21) Application number: 21706484.9 (22) Date of filing: 25.01.2021

(51) International Patent Classification (IPC):  C07F 5/02(2006.01) H01L 51/00(2006.01) C09K 11/00(2006.01) (52) Cooperative Patent Classification (CPC): H01L 51/008; C07F 5/027; H01L 51/0071; H01L 51/5012; C09K 11/06; C09K 2211/1022; C09K 2211/1014; C09K 2211/1096; Y02E 10/549 (86) International application number: PCT/EP2021/051588 (87) International publication number: WO 2021/151822 (05.08.2021 Gazette 2021/31)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 28.01.2020 EP 20154136 (71) Applicant: Samsung Display Co., Ltd. Yongin-si, Gyeonggi-do 17113 (KR)	(72) Inventor: SEIFERMANN, Stefan 77815 Bühl (DE) (74) Representative: Gulde & Partner  Patent- und Rechtsanwaltskanzlei mbB Wallstraße 58/59 10179 Berlin 10179 Berlin (DE)